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Finding the Fourth Proportional to 71,464.56, 98,624.28 and 39,631.32

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Solution

The fourth proportional to 71,464.56, 98,624.28 and 39,631.32 is: 54,692.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,464.56 : 98,624.28 = 39,631.32 : x
  2. Step 2: Convert to fraction form
    71,464.56/98,624.28 = 39,631.32/x
  3. Step 3: Cross multiply
    71,464.56x = 98,624.28 × 39,631.32
  4. Step 4: Simplify right side
    71,464.56x = 3,908,610,400.45
  5. Step 5: Solve for x
    x = 3,908,610,400.45/71,464.56
  6. Step 6: Final answer
    x = 54,692.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.